21/10- 1

Decommissioned

Well Header

Well No
21/10- 1
NSTA DEN No
304
Well Name
--
Drill Seq No
1
Quadrant / Block
21 / 10
Surface Location
57.730018, 0.973183
Source Datum
ED50
Subsea Well
Yes
Platform
--
Slot No
--
Operator
APACHE NORTH SEA LIMITED
Original Operator
--
Sub Area Operator
APACHE NORTH SEA LIMITED
Licence No
P57
Licence Type
Production
Spud Date
1970-08-11
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

21/10- 1 Original
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Oil Well
Dev Type
--
Convention
--
Primary Target
A
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
33.833
Ground Elev (m)
--
Water Depth (m)
106.68
TD MD (m)
3422.294
TD TVDSS (m)
3386.080
TD Datum Depth (m)
33.799
TD Datum Type
Kelly Bushing
Spud Date
1970-08-11
TD Reached
1970-10-05
Completion Date
1970-11-16
Release Date
1974-11-16

Formation Tops (18)

Wellbore Formation Era MD (m) TVDSS (m) Provider
21/10- 1 Horda Cenozoic 1879.000 1845.167 Lloyds Register
Stronsay Cenozoic 1879.000 1845.167 Lloyds Register
Balder Tuff Cenozoic 2071.000 2037.167 Lloyds Register
Balder Cenozoic 2071.000 2037.167 Lloyds Register
Moray Mesozoic 2071.000 2037.167 Lloyds Register
Sele Mesozoic 2100.000 2066.167 Lloyds Register
Forties Sandstone Mesozoic 2131.000 2097.167 Lloyds Register
Montrose Mesozoic 2289.000 2255.167 Lloyds Register
Lista Mesozoic 2289.000 2255.167 Lloyds Register
Balmoral Sandstone Cenozoic 2332.000 2298.167 Lloyds Register
Andrew Sandstone Cenozoic 2370.000 2336.167 Lloyds Register
Maureen Mesozoic 2464.000 2430.167 Lloyds Register
Ekofisk Mesozoic 2524.000 2490.167 Lloyds Register
Chalk Mesozoic 2524.000 2490.167 Lloyds Register
Upper Cretaceous Chalk Mesozoic 2555.000 2521.167 Lloyds Register
Fladen Mesozoic 2669.000 2635.167 Lloyds Register
Rattray Volcanics Mesozoic 2669.000 2635.167 Lloyds Register
Pentland Mesozoic 2669.000 2635.167 Lloyds Register

Lithology Intervals

No lithology intervals ingested for this well.

Interpreted Data Inventory (LR / WellStrat)

Open Interpreted Data Log
Wellbore Groups Formations Members Strat Intervals Tops HC Occ Core Cuttings DSTs
21/10- 1 5 8 5 12 18 1 3 1 1 View

Hydrocarbon Occurrence (2)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
21/10- 1 Mixed OG * 2131.5 -- 393 m thick
21/10- 1 DST DST 1 -- 2142.4 2147.0 Label / Forties

Rock Samples (116)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
21/10- 1 Cuttings 566.93 3416.81 -- -- .
21/10- 1 Core #1 2153.41 2171.4 φ 27.1% (n=40) · Kh 143.2 mD (n=25) · Kv 144.4 mD (n=23) · Density 2.68 (n=38) · UNKNOWN BU (SAND): Plug Broke Up During Re-Flux Or When Drying.; BU: Plug Broke Up During Re-Flux Or When Drying.; C: Crumbled.; P: Only One Piece Taken From Crumbly Core. Not Usually Suitable For Permeability Measurement. | SHALE .
21/10- 1 ↳ Plug 01 2153.717 -- φ 28.3% · Kv 97.7 mD · Density 2.64 · UNKNOWN -- --
21/10- 1 ↳ Plug 02 2154.022 -- UNKNOWN SHALE --
21/10- 1 ↳ Plug 03 2154.326 -- UNKNOWN SHALE --
21/10- 1 ↳ Plug 04 2154.631 -- UNKNOWN SHALE --
21/10- 1 ↳ Plug 05 2154.936 -- UNKNOWN SHALE --
21/10- 1 ↳ Plug 06 2155.241 -- UNKNOWN SHALE --
21/10- 1 ↳ Plug 07 2155.546 -- φ 29.8% · Density 2.71 · UNKNOWN -- --
21/10- 1 ↳ Plug 08 2155.85 -- φ 31.5% · Kh 90.9 mD · Density 2.76 · UNKNOWN -- --
21/10- 1 ↳ Plug 09 2156.155 -- UNKNOWN SHALE --
21/10- 1 ↳ Plug 10 2156.46 -- φ 25.6% · Kh 261.0 mD · Kv 184.0 mD · Density 2.58 · UNKNOWN -- --
21/10- 1 ↳ Plug 11 2156.765 -- φ 26.8% · Kh 137.0 mD · Density 2.72 · UNKNOWN -- --
21/10- 1 ↳ Plug 12 2157.07 -- φ 33.1% · Kh 534.0 mD · Kv 289.0 mD · Density 2.67 · UNKNOWN -- --
21/10- 1 ↳ Plug 13 2157.374 -- φ 20.6% · Kv 303.0 mD · UNKNOWN -- --
21/10- 1 ↳ Plug 14 2157.679 -- φ 27.9% · Kh 214.0 mD · Density 2.76 · UNKNOWN -- --
21/10- 1 ↳ Plug 15 2157.984 -- UNKNOWN SHALE --
21/10- 1 ↳ Plug 16 2158.289 -- UNKNOWN SHALE --
21/10- 1 ↳ Plug 17 2158.594 -- φ 26.9% · Kv 24.4 mD · Density 2.68 · UNKNOWN -- --
21/10- 1 ↳ Plug 18 2158.898 -- φ 30.3% · Density 2.66 · UNKNOWN BU (SAND): Plug Broke Up During Re-Flux Or When Drying. --
21/10- 1 ↳ Plug 19 2159.203 -- φ 30.5% · Kh 147.0 mD · Kv 81.9 mD · Density 2.60 · UNKNOWN -- --
21/10- 1 ↳ Plug 20 2159.508 -- φ 24.6% · Kh 39.0 mD · Kv 44.1 mD · Density 2.77 · UNKNOWN -- --
21/10- 1 ↳ Plug 21 2159.813 -- φ 31.0% · Kh 104.0 mD · Kv 101.0 mD · Density 2.69 · UNKNOWN -- --
21/10- 1 ↳ Plug 22 2160.118 -- φ 24.0% · Kh 2.8 mD · Kv 32.9 mD · Density 2.70 · UNKNOWN -- --
21/10- 1 ↳ Plug 23 2160.422 -- φ 29.0% · Kh 162.0 mD · Density 2.64 · UNKNOWN -- --
21/10- 1 ↳ Plug 24 2160.727 -- φ 22.8% · Kh 8.3 mD · Kv 7.7 mD · Density 2.60 · UNKNOWN -- --
21/10- 1 ↳ Plug 25 2161.032 -- φ 27.6% · Kh 113.0 mD · Kv 47.0 mD · Density 2.61 · UNKNOWN -- --
21/10- 1 ↳ Plug 26 2161.337 -- φ 26.2% · Kh 97.9 mD · Kv 44.9 mD · Density 2.65 · UNKNOWN -- --
21/10- 1 ↳ Plug 27 2161.642 -- φ 28.8% · Kh 270.0 mD · Kv 115.0 mD · Density 2.71 · UNKNOWN -- --
21/10- 1 ↳ Plug 28 2162.556 -- Density 2.64 · UNKNOWN BU (SAND): Plug Broke Up During Re-Flux Or When Drying. --
21/10- 1 ↳ Plug 29 2162.861 -- φ 26.1% · UNKNOWN P: Only One Piece Taken From Crumbly Core. Not Usually Suitable For Permeability Measurement. --
21/10- 1 ↳ Plug 30 2163.166 -- φ 27.6% · Density 2.66 · UNKNOWN P: Only One Piece Taken From Crumbly Core. Not Usually Suitable For Permeability Measurement. --
21/10- 1 ↳ Plug 31 2163.47 -- φ 27.4% · Kv 500.0 mD · Density 2.67 · UNKNOWN -- --
21/10- 1 ↳ Plug 32 2163.775 -- φ 26.7% · Density 2.76 · UNKNOWN -- --
21/10- 1 ↳ Plug 33 2164.08 -- UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 34 2164.385 -- φ 25.1% · Kh 183.0 mD · Kv 125.0 mD · Density 2.72 · UNKNOWN -- --
21/10- 1 ↳ Plug 35 2164.69 -- φ 28.5% · Kv 344.0 mD · Density 2.70 · UNKNOWN -- --
21/10- 1 ↳ Plug 36 2164.994 -- φ 28.1% · Density 2.69 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 37 2165.299 -- φ 28.6% · Kh 174.0 mD · Kv 107.0 mD · Density 2.76 · UNKNOWN -- --
21/10- 1 ↳ Plug 38 2165.604 -- φ 27.2% · Kh 96.5 mD · Kv 112.0 mD · Density 2.69 · UNKNOWN -- --
21/10- 1 ↳ Plug 39 2165.909 -- φ 27.9% · Kv 134.0 mD · Density 2.65 · UNKNOWN -- --
21/10- 1 ↳ Plug 40 2166.214 -- φ 21.5% · Density 2.62 · UNKNOWN -- --
21/10- 1 ↳ Plug 41 2166.518 -- φ 27.2% · Kh 207.0 mD · Density 2.73 · UNKNOWN -- --
21/10- 1 ↳ Plug 42 2166.823 -- φ 29.6% · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 43 2167.128 -- φ 26.0% · Kv 268.0 mD · Density 2.64 · UNKNOWN -- --
21/10- 1 ↳ Plug 44 2167.433 -- φ 24.1% · Kh 145.0 mD · Density 2.71 · UNKNOWN -- --
21/10- 1 ↳ Plug 45 2167.738 -- UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 46 2168.042 -- φ 27.7% · Kh 165.0 mD · Kv 85.2 mD · Density 2.68 · UNKNOWN -- --
21/10- 1 ↳ Plug 47 2168.347 -- φ 29.8% · Kh 340.0 mD · Kv 238.0 mD · Density 2.73 · UNKNOWN -- --
21/10- 1 ↳ Plug 48 2168.652 -- UNKNOWN BU: Plug Broke Up During Re-Flux Or When Drying. --
21/10- 1 ↳ Plug 49 2168.957 -- φ 24.8% · Kh 14.4 mD · Density 2.62 · UNKNOWN -- --
21/10- 1 ↳ Plug 50 2169.262 -- UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 51 2169.566 -- UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 52 2169.871 -- φ 27.5% · Kh 59.7 mD · Kv 35.4 mD · Density 2.68 · UNKNOWN -- --
21/10- 1 ↳ Plug 53 2170.176 -- UNKNOWN BU: Plug Broke Up During Re-Flux Or When Drying. --
21/10- 1 ↳ Plug 54 2170.481 -- φ 22.4% · Kh 9.2 mD · Density 2.70 · UNKNOWN BU: Plug Broke Up During Re-Flux Or When Drying. --
21/10- 1 ↳ Plug 55 2170.786 -- φ 25.9% · Kh 5.3 mD · Density 2.67 · UNKNOWN -- --
21/10- 1 Core #2 2237.23 2255.52 φ 24.2% (n=43) · Kh 95.5 mD (n=7) · Kv 52.8 mD (n=9) · Density 2.65 (n=32) · UNKNOWN C: Crumbled. | DENSE; SAND WITH PEBBLE INCLUSIONS .
21/10- 1 ↳ Plug 56 2237.232 -- φ 25.2% · Density 2.68 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 57 2237.537 -- UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 58 2237.842 -- φ 24.0% · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 59 2238.146 -- φ 24.1% · Kh 20.8 mD · Kv 76.2 mD · UNKNOWN -- --
21/10- 1 ↳ Plug 60 2238.451 -- φ 20.5% · Kh 2.1 mD · Kv 0.7 mD · Density 2.69 · UNKNOWN -- --
21/10- 1 ↳ Plug 61 2238.756 -- φ 9.6% · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 62 2239.061 -- φ 23.7% · Kh 170.0 mD · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 63 2239.366 -- φ 24.1% · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 64 2239.67 -- φ 25.7% · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 65 2239.975 -- φ 27.7% · Density 2.72 · UNKNOWN -- --
21/10- 1 ↳ Plug 66 2240.28 -- φ 22.4% · Kh 77.1 mD · Kv 12.7 mD · Density 2.66 · UNKNOWN -- --
21/10- 1 ↳ Plug 67 2240.585 -- φ 27.1% · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 68 2240.89 -- φ 23.9% · Density 2.63 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 69 2241.194 -- φ 32.7% · Kh 182.0 mD · Kv 90.1 mD · Density 2.64 · UNKNOWN -- --
21/10- 1 ↳ Plug 70 2241.499 -- UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 71 2241.804 -- φ 27.9% · Density 2.67 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 72 2242.109 -- φ 0.0% · Kv 0.7 mD · Density 2.62 · UNKNOWN DENSE --
21/10- 1 ↳ Plug 73 2242.414 -- Kv 0.7 mD · UNKNOWN DENSE --
21/10- 1 ↳ Plug 74 2242.718 -- φ 0.0% · Kv 0.7 mD · Density 2.60 · UNKNOWN -- --
21/10- 1 ↳ Plug 75 2243.023 -- φ 24.7% · Kh 0.7 mD · Kv 22.7 mD · UNKNOWN -- --
21/10- 1 ↳ Plug 76 2243.328 -- UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 77 2243.633 -- φ 21.5% · Density 2.54 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 78 2243.938 -- φ 24.2% · Density 2.61 · UNKNOWN -- --
21/10- 1 ↳ Plug 79 2244.242 -- φ 29.1% · Density 2.56 · UNKNOWN -- --
21/10- 1 ↳ Plug 80 2244.547 -- φ 28.7% · Density 2.59 · UNKNOWN -- --
21/10- 1 ↳ Plug 81 2244.852 -- φ 23.1% · Density 2.58 · UNKNOWN -- --
21/10- 1 ↳ Plug 82 2245.157 -- UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 83 2245.462 -- φ 24.2% · Density 2.61 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 84 2246.376 -- φ 27.4% · Density 2.58 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 85 2246.681 -- φ 11.8% · Density 2.62 · UNKNOWN -- --
21/10- 1 ↳ Plug 86 2246.986 -- φ 16.6% · Density 2.65 · UNKNOWN -- --
21/10- 1 ↳ Plug 87 2247.29 -- φ 32.6% · Kh 216.0 mD · Kv 271.0 mD · Density 2.68 · UNKNOWN -- --
21/10- 1 ↳ Plug 88 2247.595 -- φ 27.3% · Density 2.61 · UNKNOWN -- --
21/10- 1 ↳ Plug 89 2247.9 -- φ 29.5% · Density 2.61 · UNKNOWN -- --
21/10- 1 ↳ Plug 90 2248.205 -- φ 27.0% · Density 2.59 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 91 2248.51 -- φ 30.6% · Density 2.72 · UNKNOWN -- --
21/10- 1 ↳ Plug 92 2248.814 -- φ 28.0% · Density 2.65 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 93 2249.119 -- UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 94 2249.424 -- φ 28.1% · Density 2.70 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 95 2249.729 -- φ 26.6% · UNKNOWN -- --
21/10- 1 ↳ Plug 96 2250.034 -- φ 27.7% · Density 2.76 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 97 2250.338 -- UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 98 2250.643 -- φ 28.2% · Density 2.74 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 99 2250.948 -- UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 100 2251.253 -- φ 29.1% · Density 2.71 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 101 2251.558 -- UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 102 2251.862 -- φ 28.3% · Density 2.73 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 103 2252.167 -- UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 104 2252.472 -- φ 27.7% · Density 2.73 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 105 2252.777 -- UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 106 2253.082 -- φ 26.3% · Density 2.70 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 107 2253.386 -- UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 108 2253.691 -- UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 109 2253.996 -- φ 24.4% · Density 2.66 · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 110 2254.301 -- φ 22.2% · UNKNOWN C: Crumbled. --
21/10- 1 ↳ Plug 111 2254.606 -- UNKNOWN SAND WITH PEBBLE INCLUSIONS --
21/10- 1 ↳ Plug 112 2254.91 -- φ 27.7% · UNKNOWN C: Crumbled. --
21/10- 1 Core #3 3417.11 3420.77 -- -- .

Wireline Log Inventory (Ingested Curves)

No wireline log curves ingested for this well.

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser

No scanned LAS source files matched to this well.

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
21/10- 1 0 -- -- --

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